Examine source code of CDN POP

{
  "manifest_version": 2,
  "name": "CDN POP",
  "version": "1.2.0",
  "description": "Adds a badge that shows which CDN and CDN POP the current page is being loaded from.",
  "icons": {
    "48": "icons/cdn_48.png",
    "96": "icons/cdn_96.png"
  },
  "permissions": [
    "dns",
    "webRequest",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/cdn_16.png",
      "32": "icons/cdn_32.png",
      "64": "icons/cdn_64.png"
    },
    "default_title": "Unknown CDN"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5378ab7e-8bbe-4502-bf0f-d80b84eef1fb}",
      "strict_min_version": "115.0"
    },
    "gecko_android": {
      "strict_min_version": "115.0"
    }
  }
}